import axios from "axios";
import { MessageBox, Message } from "element-ui";
import store from "@/store";
import { getToken } from "@/shared/auth";
import {
  RES_SUCCESS_DEFAULT_CODE,
  RES_UNAUTHORIZED_CODE,
  REQ_OVERTIME_DURATION
} from "./constants";

const ignoreInterceptor = resp => {
  if (resp.config.url.indexOf(".md") > -1) {
    return true;
  }
  if (resp.config.params && resp.config.params.ignoreInterceptor) {
    return true;
  }
  return false;
};

// create an axios instance
const service = axios.create({
  baseURL: process.env.VUE_APP_BASE_API, // url = base url + request url
  // withCredentials: true, // send cookies when cross-domain requests
  timeout: 55000 // request timeout
});

// request interceptor
service.interceptors.request.use(
  config => {
    // do something before request is sent

    if (store().getters.token) {
      // let each request carry token
      // ['X-Token'] is a custom headers key
      // please modify it according to the actual situation
      config.headers["X-Token"] = getToken();
    }
    return config;
  },
  error => {
    // do something with request error
    console.log(error); // for debug
    return Promise.reject(error);
  }
);

// response interceptor
service.interceptors.response.use(
  /**
   * If you want to get http information such as headers or status
   * Please return  response => response
   */

  /**
   * Determine the request status by custom code
   * Here is just an example
   * You can also judge the status by HTTP Status Code
   */
  response => {
    const res = response.data;
    // if the custom code is not 20000, it is judged as an error.
    if (res.code !== RES_SUCCESS_DEFAULT_CODE && !ignoreInterceptor(response)) {
      Message({
        message: res.desc || "Error",
        type: "error",
        duration: REQ_OVERTIME_DURATION
      });

      // 4010: Illegal token; Other clients logged in;  Token expired;
      if (res.code === RES_UNAUTHORIZED_CODE) {
        // to re-login
        MessageBox.confirm(
          "您已经登出，您可以取消以停留在此页面，或再次登录",
          "确认注销",
          {
            confirmButtonText: "重新登录",
            cancelButtonText: "取消",
            type: "warning"
          }
        ).then(() => {
          store()
            .dispatch("user/resetToken")
            .then(() => {
              location.reload();
            });
        });
      }
      return Promise.reject(new Error(res.message || "Error"));
    } else {
      return res;
    }
  },
  error => {
    console.log("err" + error); // for debug
    Message({
      message: error.desc,
      type: "error",
      duration: 5 * 1000
    });
    return Promise.reject(error);
  }
);

export function post(endpoint, params = {}) {
  return service({
    url: endpoint,
    method: "post",
    data: { ...params }
  });
}

export function get(endpoint, params = {}) {
  return service({
    url: endpoint,
    method: "get",
    params: { ...params }
  });
}

export default service;
